If you haven't had a chance to look into it, the new iPhone Skylanders game is a good bit of fun. It's a simple play on Whack-a-mole, but the graphics and audio are decent and it is a perfect play for a couple minutes while waiting at the doctor's office type game. It is about on the level of a Fruit Ninja or Jet Pack Joyride, short, simple and easy to pick up and set down in a few minutes.
You can enter your figure's web code to unlock them (and the adventure pack items to get a free upgrade, but not the levels themselves). They have no impact on the play as far as I can tell (the items do though, since it essentially buys you 1 level of upgrade for free), other than the "element of the day" that gives you bonus coins. It does give you a nice collectors list, although you cannot enter the Legendaries or Camo/Warnado yet (the slots say "Coming Soon").
On another note, I've been doing some looking and it doesn't appear that Wham Shell has shipped yet. There is one valid auction on Ebay, from a guy in California and he posted another image on Dark Spyro forums, so I think it is legit. What he doesn't do is post how he got it, I'm guessing through a connection (isn't Activision in California?) or he works there. The current shipments that have Warnado/Camo have one of each in the boxes, there have been many reports of the exact contents of those boxes, but no reports of Wham Shell.
My personal belief is that Whammie will be like Legendary Trigger Happy and be shipped in boxes that contain only him in a couple weeks (LTH also didn't ship at the same time as his wave), although won't be TRU limited. If that is true, we will be swimming in them come a month from now. I don't think they would reconfigure the wave boxes just to rotate him in, that kind of change in manufacturing and packaging mid-run can cause nightmares for a company. They have them made and are sitting on him so the Camo/Warnado boxes can have some time on the shelves. Ever since the beginning, he has sort of been the odd one out, just like LTH. Not in a 3 pack, not associated with a wave directly, sort of a nebulous release window (originally he was listed as "Summer"). Again, it is just a guess, but if he is part of a shipment of boxes of only him it would be nice because I think he will be a popular character that kids will want to play, not just get to fill up their collections. I know he will be on my short list of ones I play regularly based on the videos.